Table of contents

1. Introduction to Anatomy & Physiology5h 43m
2. Cell Chemistry & Cell Components12h 36m
3. Energy & Cell Processes10h 6m
4. Tissues & Histology10h 3m
5. Integumentary System2h 20m
6. Bones & Skeletal Tissue2h 16m
7. The Skeletal System2h 35m
8. Joints2h 17m
9. Muscle Tissue2h 33m
10. Muscles1h 11m
11. Nervous Tissue and Nervous System1h 35m
12. The Central Nervous System1h 6m
- Introduction to the Central Nervous System
  18m
- The Cerebrum
  48m
13. The Peripheral Nervous System1h 26m
14. The Autonomic Nervous System1h 38m
15. The Special Senses2h 41m
16. The Endocrine System2h 48m
17. The Blood3h 22m
18. The Heart3h 42m
19. The Blood Vessels3h 35m
20. The Lymphatic System3h 16m
21. The Immune System14h 37m
22. The Respiratory System3h 20m
23. The Digestive System2h 5m
24. Metabolism and Nutrition4h 0m
25. The Urinary System2h 39m
26. Fluid and Electrolyte Balance, Acid Base Balance37m
27. The Reproductive System2h 5m
28. Human Development1h 21m
29. Heredity3h 32m

1. Introduction to Anatomy & Physiology

Introduction to Organ Systems

Anatomy & Physiology

1. Introduction to Anatomy & Physiology

Introduction to Organ Systems

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Multiple Choice

Which autonomic nervous system(s) innervate(s) the heart?

Neither the sympathetic nor the parasympathetic nervous system

Only the sympathetic nervous system

Only the parasympathetic nervous system

Both the sympathetic and parasympathetic nervous systems

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Verified step by step guidance

Understand the role of the autonomic nervous system (ANS): The ANS is divided into two branches, the sympathetic and parasympathetic nervous systems, which regulate involuntary physiological functions, including heart activity.

Learn the effects of the sympathetic nervous system on the heart: The sympathetic nervous system increases heart rate and contractility by releasing norepinephrine, which binds to beta-adrenergic receptors on the heart.

Learn the effects of the parasympathetic nervous system on the heart: The parasympathetic nervous system decreases heart rate by releasing acetylcholine, which binds to muscarinic receptors on the heart.

Recognize that both systems work together to maintain homeostasis: The sympathetic nervous system activates during stress or physical activity (fight-or-flight response), while the parasympathetic nervous system dominates during rest (rest-and-digest response).

Conclude that the heart is innervated by both the sympathetic and parasympathetic nervous systems, as they provide complementary regulation of cardiac function depending on the body's needs.